This project is based on smallpt by Kevin Beason (https://www.kevinbeason.com/smallpt/). It was extended to include features such as volumetric lights, explicit light source sampling and vignetting.
The code can be compiled using the following command
g++ -O3 cgrpt2.cpp -o cgrpt -lopengl32 -lgdi32
A rendering can be generated by executing the compiled script. There are a number of arguments available
spp: samples per pixel
res: resolution
scene: 0, 1, 2 or 3 (defaults to 0)
els: explicit light source sampling -> either 0 or 1
ka: absorption parameter
ks: scattering parameter
g: henyey greenstein phase function parameters -> -1 <= g <= 1
usage: cgrpt.exe -spp -res -scene -els -ka -ks -g
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| cgrpt.exe 10000 800 0 1 |
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| cgrpt.exe 10000 800 0 1 0.004 0.02 0.85 |
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| cgrpt.exe 10000 800 1 1 |
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| cgrpt.exe 10000 800 1 1 0.01 0.05 0.9 |
- David Pysp. Bidirectional path tracing for rendering participating media.
- Matt Pharr. Light transport ii: Volume rendering.
- Kevin Beason. smallpt: Global Illumination in 99 lines of C++.